<template>
  <el-container class="home-container">
    <!-- 头部区域 -->
    <el-header>
      <div>
        <img src="../assets/heima.png" alt="" />
        <span>电商后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <el-container>
      <!-- 侧边栏 -->
      <el-aside :width="iscollapse ? '64px' : '200px'">
        <div class="toggle" @click="toggleCol">|||</div>
        <!-- 侧边栏菜单区域 -->
        <el-col :span="12" class="home-col">
          <el-menu
            background-color="#333744"
            text-color="#fff"
            active-text-color="#409EFF"
            :unique-opened="true"
            :collapse="iscollapse"
            :collapse-transition="false"
            :router="true"
            :default-active="activePath"
          >
            <!-- 一级菜单 -->
            <el-submenu
              :index="item.id + ''"
              v-for="item in menuList"
              :key="item.id"
            >
              <template slot="title">
                <i :class="iconsObj[item.id]"></i>
                <span>{{ item.authName }}</span>
              </template>
              <!-- 二级菜单 -->
              <el-menu-item
                :index="'/' + subItem.path"
                v-for="subItem in item.children"
                :key="subItem.id"
                @click="saveNaveState('/' + subItem.path)"
              >
                <i class="el-icon-menu"></i>
                <span>{{ subItem.authName }}</span>
              </el-menu-item>
            </el-submenu>
          </el-menu>
        </el-col>
      </el-aside>
      <el-main>
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  name: "Home",
  data() {
    return {
      menuList: [],
      iconsObj: {
        125: "iconfont icon-user",
        103: "iconfont icon-tijikongjian",
        101: "iconfont icon-shangpin",
        102: "iconfont icon-danju",
        145: "iconfont icon-baobiao",
      },
      iscollapse: false,
      activePath: "",
    };
  },
  methods: {
    logout() {
      window.sessionStorage.clear();
      this.$router.push("/login");
    },
    async getMenuList() {
      const { data: res } = await this.$http.get("menus");
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg);
      this.menuList = res.data;
    },
    toggleCol() {
      this.iscollapse = !this.iscollapse;
    },
    saveNaveState(activePath) {
      window.sessionStorage.setItem("active", activePath);
      this.activePath = activePath;
    },
  },
  created() {
    this.getMenuList();
    this.activePath = window.sessionStorage.getItem("active");
  },
};
</script>

<style lang='less' scoped>
.el-header {
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  background-color: #373d41;
  color: #fff;
  > div {
    display: flex;
    align-items: center;
    span {
      margin-left: 15px;
    }
  }
}
.el-aside {
  background-color: #333744;
  .el-menu {
    border-right: none;
  }
}
.el-main {
  background-color: #eaedf1;
}
.home-container {
  height: 100%;
}
.home-col {
  width: 100%;
}
.iconfont {
  margin-right: 10px;
}
.toggle {
  background-color: #4a5064;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;
}
</style>